#include "ebm_env.h"
#include "ebm_msg.h"
#include "ebm_passback.h"



#define dbg printf

static unsigned int last_session_id= 0;

static struct bsockt passback_net_handle = {FD_INVALID,0,0};

enum {
UNPASSIVE= 1,
PASSIVE= 2,
};

static unsigned int  g_tsCrcTable[256]=
{
	0x00000000, 0x04c11db7, 0x09823b6e, 0x0d4326d9,0x130476dc, 0x17c56b6b, 0x1a864db2, 0x1e475005,0x2608edb8, 0x22c9f00f, 0x2f8ad6d6, 0x2b4bcb61,
	0x350c9b64, 0x31cd86d3, 0x3c8ea00a, 0x384fbdbd,0x4c11db70, 0x48d0c6c7, 0x4593e01e, 0x4152fda9,0x5f15adac, 0x5bd4b01b, 0x569796c2, 0x52568b75,
	0x6a1936c8, 0x6ed82b7f, 0x639b0da6, 0x675a1011,0x791d4014, 0x7ddc5da3, 0x709f7b7a, 0x745e66cd,0x9823b6e0, 0x9ce2ab57, 0x91a18d8e, 0x95609039,
	0x8b27c03c, 0x8fe6dd8b, 0x82a5fb52, 0x8664e6e5,0xbe2b5b58, 0xbaea46ef, 0xb7a96036, 0xb3687d81,0xad2f2d84, 0xa9ee3033, 0xa4ad16ea, 0xa06c0b5d,
	0xd4326d90, 0xd0f37027, 0xddb056fe, 0xd9714b49,0xc7361b4c, 0xc3f706fb, 0xceb42022, 0xca753d95,0xf23a8028, 0xf6fb9d9f, 0xfbb8bb46, 0xff79a6f1,
	0xe13ef6f4, 0xe5ffeb43, 0xe8bccd9a, 0xec7dd02d,0x34867077, 0x30476dc0, 0x3d044b19, 0x39c556ae,0x278206ab, 0x23431b1c, 0x2e003dc5, 0x2ac12072,
	0x128e9dcf, 0x164f8078, 0x1b0ca6a1, 0x1fcdbb16,0x018aeb13, 0x054bf6a4, 0x0808d07d, 0x0cc9cdca,0x7897ab07, 0x7c56b6b0, 0x71159069, 0x75d48dde,
	0x6b93dddb, 0x6f52c06c, 0x6211e6b5, 0x66d0fb02,0x5e9f46bf, 0x5a5e5b08, 0x571d7dd1, 0x53dc6066,0x4d9b3063, 0x495a2dd4, 0x44190b0d, 0x40d816ba,
	0xaca5c697, 0xa864db20, 0xa527fdf9, 0xa1e6e04e,0xbfa1b04b, 0xbb60adfc, 0xb6238b25, 0xb2e29692,0x8aad2b2f, 0x8e6c3698, 0x832f1041, 0x87ee0df6,
	0x99a95df3, 0x9d684044, 0x902b669d, 0x94ea7b2a,0xe0b41de7, 0xe4750050, 0xe9362689, 0xedf73b3e,0xf3b06b3b, 0xf771768c, 0xfa325055, 0xfef34de2,
	0xc6bcf05f, 0xc27dede8, 0xcf3ecb31, 0xcbffd686,0xd5b88683, 0xd1799b34, 0xdc3abded, 0xd8fba05a,0x690ce0ee, 0x6dcdfd59, 0x608edb80, 0x644fc637,
	0x7a089632, 0x7ec98b85, 0x738aad5c, 0x774bb0eb,0x4f040d56, 0x4bc510e1, 0x46863638, 0x42472b8f,0x5c007b8a, 0x58c1663d, 0x558240e4, 0x51435d53,
	0x251d3b9e, 0x21dc2629, 0x2c9f00f0, 0x285e1d47,0x36194d42, 0x32d850f5, 0x3f9b762c, 0x3b5a6b9b,0x0315d626, 0x07d4cb91, 0x0a97ed48, 0x0e56f0ff,
	0x1011a0fa, 0x14d0bd4d, 0x19939b94, 0x1d528623,0xf12f560e, 0xf5ee4bb9, 0xf8ad6d60, 0xfc6c70d7,0xe22b20d2, 0xe6ea3d65, 0xeba91bbc, 0xef68060b,
	0xd727bbb6, 0xd3e6a601, 0xdea580d8, 0xda649d6f,0xc423cd6a, 0xc0e2d0dd, 0xcda1f604, 0xc960ebb3,0xbd3e8d7e, 0xb9ff90c9, 0xb4bcb610, 0xb07daba7,
	0xae3afba2, 0xaafbe615, 0xa7b8c0cc, 0xa379dd7b,0x9b3660c6, 0x9ff77d71, 0x92b45ba8, 0x9675461f,0x8832161a, 0x8cf30bad, 0x81b02d74, 0x857130c3,
	0x5d8a9099, 0x594b8d2e, 0x5408abf7, 0x50c9b640,0x4e8ee645, 0x4a4ffbf2, 0x470cdd2b, 0x43cdc09c,0x7b827d21, 0x7f436096, 0x7200464f, 0x76c15bf8,
	0x68860bfd, 0x6c47164a, 0x61043093, 0x65c52d24,0x119b4be9, 0x155a565e, 0x18197087, 0x1cd86d30,0x029f3d35, 0x065e2082, 0x0b1d065b, 0x0fdc1bec,
	0x3793a651, 0x3352bbe6, 0x3e119d3f, 0x3ad08088,0x2497d08d, 0x2056cd3a, 0x2d15ebe3, 0x29d4f654,0xc5a92679, 0xc1683bce, 0xcc2b1d17, 0xc8ea00a0,
	0xd6ad50a5, 0xd26c4d12, 0xdf2f6bcb, 0xdbee767c,0xe3a1cbc1, 0xe760d676, 0xea23f0af, 0xeee2ed18,0xf0a5bd1d, 0xf464a0aa, 0xf9278673, 0xfde69bc4,
	0x89b8fd09, 0x8d79e0be, 0x803ac667, 0x84fbdbd0,0x9abc8bd5, 0x9e7d9662, 0x933eb0bb, 0x97ffad0c,0xafb010b1, 0xab710d06, 0xa6322bdf, 0xa2f33668,
	0xbcb4666d, 0xb8757bda, 0xb5365d03, 0xb1f740b4
};
unsigned int nstar_crc32_ts(unsigned char *buffer,unsigned int size)
{
	unsigned int crc32_reg = 0xFFFFFFFF;
	unsigned int cntByte,temp1,temp2,temp3;

	for (cntByte = 0; cntByte < size; cntByte++)
	{
		temp1=(crc32_reg << 8 );
		temp2=g_tsCrcTable[((crc32_reg >> 24) ^ *buffer) & 0xFF];
		temp3=temp1^temp2;
      if(temp3 != (temp1^temp2))
         break;
		crc32_reg = (crc32_reg << 8 ) ^ g_tsCrcTable[((crc32_reg >> 24) ^ *buffer++) & 0xFF];
	}
	return crc32_reg;
}

unsigned char passback_net_send(unsigned char *data, unsigned int len)
{
	int ret= write(passback_net_handle.fd, data, len);
	if(ret < 0){
		printf("net wrtie err=%d\n", ret);
		command_net_restart();
	}
	return 0;
}


void func_send_hearttick(void)
{
	
	unsigned char data[100];
	unsigned char *pdata;
	PASSBACK_FIXED_HEADER *msg;
	HEART_TICK_CONTENT* business;
	msg= (PASSBACK_FIXED_HEADER*)data;

	msg->head_flag= 0xFDFE;
	msg->version= 0x0001;
	msg->session_id= swap32(last_session_id);
	last_session_id++;
	msg->type= UNPASSIVE;
	msg->data_len= swap16(0x35);
	pdata= ebm_env_get_sourceid();


	memcpy(msg->src_socde, pdata, 12);
	
	msg->items=swap16(1);
	memset(msg->items_arry, 0, 12);
	msg->business_type= PASSBACK_HEARTTICK;
	msg->business_len= swap16(0x09);
	business= (HEART_TICK_CONTENT*)&msg->business_data;

	business->sta= 2;
	business->register_1st_time= ebm_env_get_register_1st_time();
	business->phyid_len=6;

	pdata= ebm_env_get_sourceid();
	
	memcpy(msg->src_socde, pdata, 12);
	
	pdata= ebm_env_get_phyid();
	
	memcpy(business->phyid, pdata, 6);

	unsigned int *p_crc= (unsigned int*) (data+49);

	unsigned int crc_val= nstar_crc32_ts(data, 49);
	*p_crc= swap32(crc_val);

	passback_net_send(data, 53);
	
	if(0)
	{
		int i;
		for(i=0; i< 53;i++){
			printf("%02X ", data[i]);
			if(i%16 == 15)
				printf("\n");
		}
		printf("\n");
	}

}





static void _socket_close(int *fd)
{
	if(*fd != FD_INVALID){
		close(*fd);
		*fd = FD_INVALID;
	}
}


static int _socket_open(unsigned int ip, unsigned short port)
{
    int conn_sock;
    struct sockaddr_in	server_addr;
    conn_sock	= socket(AF_INET, SOCK_STREAM , 0);
    if (conn_sock < 0) {
        printf("socket(2) error\n");
        return  FD_INVALID;
    }

    (void)memset(&server_addr, 0, sizeof(server_addr));
    server_addr.sin_family		= AF_INET;
    server_addr.sin_port		= htons(port);
   	server_addr.sin_addr.s_addr = htonl(ip);
	if (connect(conn_sock,
            (struct sockaddr *)&server_addr,
            sizeof(server_addr)) >= 0) {
        printf("connect ok\n");
  
	}
	else{
		printf("wait connect to transmit addr failed %d.%d.%d.%d:%d\n",
				ip>>24, (ip&0xff0000)>>16, (ip&0xff00)>>8, ip&0xff, port);
		conn_sock= FD_INVALID;
	}	
	return conn_sock;
}


static unsigned char _creat_connect_socket(struct bsockt *h_net)
{
	int fd=0;
	unsigned int ip;
	unsigned short port;
	unsigned char ret = 0;
	_socket_close(&h_net->fd);

	ip = h_net->ipaddr;
	port = h_net->port;	

	if(ip > 0 && port > 0 ){
		fd = _socket_open(ip, port);
		if(fd  != FD_INVALID ){
			h_net->fd = fd;
			h_net->lastTimeSec = 0;
			h_net->keepSec = 0;
			ret = 1;	
		}
	}	
	return ret;
}



static void block_rec(unsigned int fd)
{
	static unsigned char rbuf[1460];
	int	nsel;
	struct	timeval timeover={0};
	fd_set rfd_set; 
	timeover.tv_sec = 1;
	timeover.tv_usec = 500000;
	FD_ZERO( &rfd_set );
	FD_SET(fd, &rfd_set );
	nsel = select( fd+1, &rfd_set, NULL, NULL, &timeover );
	if ( nsel > 0 )
	{
		if(FD_ISSET( fd, &rfd_set )){
			int rlen = read(fd, rbuf, 1460);
			if(rlen <= 0){
				printf("passback socket unvaild\n");
				command_net_restart();
			}
			else{
				printf("rlen %d bytes\n", rlen);
			}
				
		}
	}			
}

static void data_process(void)
{
	block_rec(passback_net_handle.fd);
}


static void passback_net_machine(void *parm)
{
	struct bsockt *h_net= (struct bsockt *)parm;
	if(h_net->isNeedCreat == 3){
		h_net->isNeedCreat = 0;
		_socket_close(&h_net->fd);
	}
	else if(h_net->isNeedCreat == 1){
		if(1 == _creat_connect_socket(h_net)){
			h_net->isNeedCreat = 0;
		}
		else{
			h_net->isNeedCreat = 2;
			h_net->lastTimeSec = app_get_systime();
		}
	}
	else if(h_net->isNeedCreat == 2){
		if(h_net->lastTimeSec + 10 < app_get_systime()){
			if(1 == _creat_connect_socket(h_net)){
				h_net->isNeedCreat = 0;
			}
			else{
				h_net->lastTimeSec = app_get_systime();
			}
		}
	}
}

void passback_net_start(unsigned int remote_ip, unsigned short remote_port)
{
	struct bsockt *h_net= &passback_net_handle;
	h_net->isNeedCreat = 1;
	h_net->ipaddr= remote_ip;
	h_net->port= remote_port;
}
void passback_net_stop(void)
{
	struct bsockt *h_net= &passback_net_handle;
	h_net->isNeedCreat = 3;
}

void passback_net_restart(void)
{
	struct bsockt *h_net= &passback_net_handle;
	_socket_close(&h_net->fd);
	h_net->isNeedCreat = 2;
	h_net->lastTimeSec = app_get_systime() + 5;/*10 -5 =5s gaps*/
}

static volatile unsigned int heart_timer;
#define HEART_TICK_SLEEP(n) app_sleep(&heart_timer, n*1000)
#define HEART_TICK_PEND(n) app_pend_wake(heart_timer)

void passback_net_loop(void)
{
	passback_net_machine(&passback_net_handle);
	if(passback_net_handle.fd != FD_INVALID){
		data_process();
		if(HEART_TICK_PEND()){
			func_send_hearttick();
			HEART_TICK_SLEEP(10);
		}
	}
	usleep(10*1000);
}






